Ideally you could even have source code that spits out diagrams for more visual parts of a program by embedding small elisp snippets.Or perhaps you could use it to create elisp games that need a more visual presentation. (I know there is a way to have it read SVG files after exporting them )

I just think it is kind of an *ah ha!* moment to have source code that generates some pictorial documentation when you run a program.This is useful when you are working with things easily described with pictures.

I've still got to write a function to export .SVG but I've worked with the format before and it is simple to write a small subset.